diff options
Diffstat (limited to 'pym/portage/package/ebuild/_config/features_set.py')
| -rw-r--r-- | pym/portage/package/ebuild/_config/features_set.py | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/pym/portage/package/ebuild/_config/features_set.py b/pym/portage/package/ebuild/_config/features_set.py index 7ab148fc8..a39fb89dc 100644 --- a/pym/portage/package/ebuild/_config/features_set.py +++ b/pym/portage/package/ebuild/_config/features_set.py @@ -5,6 +5,13 @@ __all__ = ( 'features_set', ) +import logging + +from portage.const import SUPPORTED_FEATURES +from portage.localization import _ +from portage.output import colorize +from portage.util import writemsg_level + class features_set(object): """ Provides relevant set operations needed for access and modification of @@ -51,6 +58,15 @@ class features_set(object): if need_sync: self._sync_env_var() + def difference_update(self, values): + self._settings.modifying() + values = list(values) + self._settings._features_overrides.extend('-' + k for k in values) + remove_us = self._features.intersection(values) + if remove_us: + self._features.difference_update(values) + self._sync_env_var() + def remove(self, k): """ This never raises KeyError, since it records a permanent override @@ -65,3 +81,49 @@ class features_set(object): if k in self._features: self._features.remove(k) self._sync_env_var() + + def _validate(self): + """ + Implements unknown-features-warn and unknown-features-filter. + """ + if 'unknown-features-warn' in self._features: + unknown_features = \ + self._features.difference(SUPPORTED_FEATURES) + if unknown_features: + unknown_features = unknown_features.difference( + self._settings._unknown_features) + if unknown_features: + self._settings._unknown_features.update(unknown_features) + writemsg_level(colorize("BAD", + _("FEATURES variable contains unknown value(s): %s") % \ + ", ".join(sorted(unknown_features))) \ + + "\n", level=logging.WARNING, noiselevel=-1) + + if 'unknown-features-filter' in self._features: + unknown_features = \ + self._features.difference(SUPPORTED_FEATURES) + if unknown_features: + self.difference_update(unknown_features) + self._prune_overrides() + + def _prune_overrides(self): + """ + If there are lots of invalid package.env FEATURES settings + then unknown-features-filter can make _features_overrides + grow larger and larger, so prune it. This performs incremental + stacking with preservation of negative values since they need + to persist for future config.regenerate() calls. + """ + overrides_set = set(self._settings._features_overrides) + if len(overrides_set) < len(self._settings._features_overrides): + positive = set() + negative = set() + for x in self._settings._features_overrides: + if x[:1] == '-': + positive.discard(x[:1]) + negative.add(x[:1]) + else: + positive.add(x) + negative.discard(x) + self._settings._features_overrides[:] = \ + list(positive) + list(negative) |